Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-06-18
Int.J.Mod.Phys.A22:3229-3259,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, 6 figures
Scientific paper
10.1142/S0217751X07036889
We carry out a detailed analysis of sparticle mass spectrum in supersymmetric grand unified theories. We consider the spectroscopy of the squarks and sleptons in SU(5) and SO(10) grand unified theories, and show how the underlying supersymmetry breaking parameters of these theories can be determined from a measurement of different sparticle masses. This analysis is done analytically by integrating the one-loop renormalization group equations with appropriate boundary conditions implied by the underlying grand unified gauge group. We also consider the impact of non-universal gaugino masses on the sparticle spectrum, especially the neutralino and chargino masses which arise in supersymmetric grand unified theories with non-minimal gauge kinetic function. In particular, we study the interrelationships between the squark and slepton masses which arise in grand unified theories at the one-loop level, which can be used to distinguish between the different underlying gauge groups and their breaking pattern to the Standard Model gauge group. We also comment on the corrections that can affect these one-loop results.
Ananthanarayan Balasubramanian
Pandita Pran N.
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